A 34-year-old woman posed as a 15-year-old to enroll as a sophomore at a high school in East Texas, officials said.

Police in Longview, Texas say Charity Johnson was arrested early Tuesday morning after telling officers her name was "Charite Stevens" and was 15 years old, The Associated Press reported.

The situation began to unfold after Tamica Lincoln called the police to have Johnson removed from her home. Lincoln has been Johnson's caregiver ever since she took her in in March. Lincoln said the two used to work together at McDonald's and that Johnson seemed like a down-on-her-luck teen in need of a place to stay.

However, when Lincoln started to suspect that something might be off with her house guest, she decided that Johnson had over-stayed her welcome and called the police to get her out. When police arrived, they began investigating Johnson and ultimately determined that she gave them a false name and birthdate, so they arrested her.

Police say records show that Johnson is actually 34 years old, not 15.

She has been enrolled at the New Life Christian School since October.

"She acted like a 15-, 16-year-old. She was an attentive student, respectful, did her homework," Stuart Newlin, the principal of the school, told The Associated Press. "Everybody liked her."

Johnson kept active Facebook and Instagram accounts, all with posts that would be appropriate for a teenage girl.

No motive has been revealed, but new developments have lead investigators to believe the deception might go deeper than just a fraudulent high school enrollment. A woman who runs a charity group for needy children in Dallas said that Johnson also tried to join her group.